public async Task <ResponseMessage <(Guid bookId, Guid seriesId)> > AddBookToSeries(Guid bookId, Guid seriesId)
{
var response = new ResponseMessage <(Guid bookId, Guid seriesId)>();
if (!await _seriesRepository.CheckAvailabilityAddingBookToSeries(bookId, seriesId))
{
response.RawData = $"Can't add book with id {bookId} to series with id {seriesId}.";
return(response);
}
response.Payload = await _seriesRepository.AddBookToSeries(bookId, seriesId);
return(response);
}
